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Y <br /> 4. COLORADO BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +2.0 indicates that for February COLORADO RIVER BASIN <br /> the basin water supplies were above normal. The Soil 5 Surface Water Supply "I.t ny <br /> Conservation Service reports February 28 snowpack at 126% 41 _z <br /> of normal. Storage in Green Mountain, Ruedi, and Williams J <br /> Fork reservoirs totaled 114%of normal on February 28. Flow = 3 <br /> at the gaging station, Colorado River near Dotsero, averaged 2 <br /> 712 cfs as compared to the 1961-1991 February average of 1--Fili,- :! r : <br /> 974 cfs. JFi 0 ' -J11 I \' <br /> :,w , 1 '�}Y <br /> Outlook % t[ ' II <br /> 1 <br /> a -2_ r M1 ` ' <br /> The runoff forecasts for the Colorado drainage vary G 1 _ <br /> among the tributaries. Based on information from the Soil _3- <br /> Conservation Service,the Flat Tops area and Blue River should -4 <br /> JANI34 JAN85 JAN96 JAN97 JAN89 JAN99 JAN90 JAN91 JAN92 JAP423 <br /> be near normal, the upper Colorado, Fraser, Williams Fork, IC,I1Wy <br /> EAR <br /> and Eagle River drainages above normal, and the Crystal, <br /> Frying Pan, and Roaring Fork Rivers well above normal. The <br /> snowpack on the Grand Mesa is around 200%of normal and <br /> should also have an abundant spring runoff. Because March <br /> and April are critical to the winter snowpack, these estimates COLORADO RIVER NR. DOTSEPO <br /> could change. Soo _ FLOW BY YEAR <br /> 450 <br /> Administrative/Management Concerns <br /> Since this should be a good runoff year, the Cameo i 400 <br /> � <br /> call will likely not come on until August. This should lessen + 350 <br /> the demand for replacement water required in various a l 300 <br /> augmentation and substitute water supply plans. The 1 1 250 <br /> Shoshone call (1/17/1902) used to satisfy the power plant in 1" 2. <br /> Glenwood Canyon will likely remain on during March and IL <br /> most of April. Most of the reservoirs should be able to fill this ' <br /> s. <br /> spring and summer. Granby Reservoir probably will not fill 100 <br /> but should be able to store a considerable amount. <br /> Oct Nnv OAc JAn Fob March <br /> MONTH <br /> Public Use Impacts T`'°"' °�' °"' A� X 1503 <br /> The heavy snowfall along with high winds has caused <br /> extreme avalanche danger. On February 20, several large , <br /> avalanches on drainages above Aspen blocked the flow of <br /> water in the creeks and temporarily shut off the water supply REPRESENTATIVE RESERVOIRS <br /> to the city of Aspen. On the next day, a slide occurred which 70 COLORAG°RIVER6' IN <br /> blocked I-70 west of Vail and buried four cars. Aside from the \ .j <br /> (4^ <br /> numerous avalanches winter recreationalists have enjoyed the <br /> abundance of snow. <br /> 40 j <br /> 1B / <br /> g 30 <br /> ./ '/\\z.\\,\ <br /> /./ \' <br /> 3 20 j?\\\:\\\,: \ <br /> 10 <br /> arson Ibunta In RIwdI Bull...Fork <br /> ® Avg. 2/20 Contents ® 2/2W 03 Coo 0nta <br /> 7 <br />